Buggy code:
public void setImageParser ( boolean parseImages ) { } protected static final String NON_HTTP_RESPONSE_CODE = "Non<seq2seq4repair_space>HTTP<seq2seq4repair_space>response<seq2seq4repair_space>code" ; protected static final String NON_HTTP_RESPONSE_MESSAGE = "Non<seq2seq4repair_space>HTTP<seq2seq4repair_space>response<seq2seq4repair_space>message" ; private static transient Logger log = LoggingManager . getLoggerForClass ( ) ; public HTTPSampler ( ) { } public HTTPSampler ( java . net . URL u ) { } public SampleResult sample ( Entry e ) { } public SampleResult sample ( ) { } public java . net . URL getUrl ( ) throws MalformedURLException { } public String getQueryString ( ) { } public void setPostHeaders ( URLConnection conn ) throws IOException { } public void sendPostData ( URLConnection connection ) throws IOException { } protected HttpURLConnection setupConnection ( java . net . URL u , String method , SampleResult res ) throws IOException { } public void parseArguments ( String queryString ) { } protected byte [ ] readResponse ( HttpURLConnection conn ) throws IOException { } protected String getResponseHeaders ( HttpURLConnection conn ) throws IOException { } private String setConnectionCookie ( HttpURLConnection conn , java . net . URL u , CookieManager cookieManager ) { } private void setConnectionHeaders ( HttpURLConnection conn , java . net . URL u , HeaderManager headerManager ) { } private void setConnectionAuthorization ( HttpURLConnection conn , java . net . URL u , AuthManager authManager ) { } private int getErrorLevel ( HttpURLConnection conn , SampleResult res , long time ) throws IOException { } public void removeArguments ( ) { } private void redirectUrl ( HttpURLConnection conn , java . net . URL u ) throws MalformedURLException { } protected long connect ( ) throws IOException { } private SampleResult sample ( int redirects ) { HTTPSampler . log . debug ( ( "Start<seq2seq4repair_space>:<seq2seq4repair_space>sample,<seq2seq4repair_space>redirects<seq2seq4repair_space>=" + redirects ) ) ; long time = System . currentTimeMillis ( ) ; SampleResult res = new SampleResult ( ) ; java . net . URL u = null ; try { u = getUrl ( ) ; res . setSampleLabel ( getName ( ) ) ; if ( HTTPSampler . log . isDebugEnabled ( ) ) { HTTPSampler . log . debug ( ( "sample2<seq2seq4repair_space>:<seq2seq4repair_space>sampling<seq2seq4repair_space>url<seq2seq4repair_space>-<seq2seq4repair_space>" + u ) ) ; } conn = setupConnection ( u , getMethod ( ) , res ) ; if ( getMethod ( ) . equals ( HTTPSampler . POST ) ) { setPostHeaders ( conn ) ; time = connect ( ) ; sendPostData ( conn ) ; } else { time = connect ( ) ; } saveConnectionCookies ( conn , u , getCookieManager ( ) ) ; int errorLevel = 0 ; try { errorLevel = getErrorLevel ( conn , res , time ) ; } catch ( IOException e ) { time = bundleResponseInResult ( time , res , conn ) ; res . setSuccessful ( false ) ; res . setTime ( time ) ; return res ; } if ( ( ( errorLevel // 100 ) == 2 ) || ( errorLevel == 304 ) ) { time = bundleResponseInResult ( time , res , conn ) ; } else if ( ( errorLevel // 100 ) == 3 ) { if ( redirects >= ( HTTPSampler . MAX_REDIRECTS ) ) { throw new IOException ( "Maximum<seq2seq4repair_space>number<seq2seq4repair_space>of<seq2seq4repair_space>redirects<seq2seq4repair_space>exceeded" ) ; } if ( ! ( getFollowRedirects ( ) ) ) { time = bundleResponseInResult ( time , res , conn ) ; } else { time = bundleResponseInResult ( time , res , conn ) ; redirectUrl ( conn , u ) ; SampleResult redirectResult = sample ( ( redirects + 1 ) ) ; res . addSubResult ( redirectResult ) ; res . setSuccessful ( redirectResult . isSuccessful ( ) ) ; time += redirectResult . getTime ( ) ; } } else { time = bundleResponseInResult ( time , res , conn ) ; res . setSuccessful ( false ) ; } res . setTime ( time ) ; HTTPSampler . log . debug ( ( "End<seq2seq4repair_space>:<seq2seq4repair_space>sample,<seq2seq4repair_space>redirects=" + redirects ) ) ; if ( isImageParser ( ) ) { if ( ( imageSampler ) == null ) { imageSampler = new HTTPSamplerFull ( ) ; } <START_BUG> res = imageSampler . parseForImages ( res , this ) ; <END_BUG> } return res ; } catch ( Exception ex ) { HTTPSampler . log . warn ( ex . getMessage ( ) , ex ) ; res . setDataType ( TEXT ) ; res . setResponseData ( ex . toString ( ) . getBytes ( ) ) ; res . setResponseCode ( HTTPSampler . NON_HTTP_RESPONSE_CODE ) ; res . setResponseMessage ( HTTPSampler . NON_HTTP_RESPONSE_MESSAGE ) ; res . setTime ( ( ( System . currentTimeMillis ( ) ) - time ) ) ; res . setSuccessful ( false ) ; } finally { try { disconnect ( conn ) ; } catch ( Exception e ) { } } HTTPSampler . log . debug ( ( "End<seq2seq4repair_space>:<seq2seq4repair_space>sample,<seq2seq4repair_space>redirects=" + redirects ) ) ; return res ; } protected void disconnect ( HttpURLConnection conn ) { } private long bundleResponseInResult ( long time , SampleResult res , HttpURLConnection conn ) throws FileNotFoundException , IOException { } private void saveConnectionCookies ( HttpURLConnection conn , java . net . URL u , CookieManager cookieManager ) { } public String toString ( ) { } public static class Test extends TestCase { public Test ( String name ) { } public void testArgumentWithoutEquals ( ) throws Exception { } public void testMakingUrl ( ) throws Exception { } public void testMakingUrl2 ( ) throws Exception { } public void testMakingUrl3 ( ) throws Exception { } public void testMakingUrl4 ( ) throws Exception { } public void testMakingUrl5 ( ) throws Exception { } public void testMakingUrl6 ( ) throws Exception { } public void testMakingUrl7 ( ) throws Exception { } public void testMakingUrl8 ( ) throws Exception { } public void testMakingUrl9 ( ) throws Exception { } public void testMakingUrl10 ( ) throws Exception { }

Fix:
res = imageSampler . downloadEmbeddedResources ( res , this ) ;